DOCUMENT:Q222119 08-MAY-2002 [sna] TITLE :SNA Server Fails With Event 686 Using Persistent Verification PRODUCT :Microsoft SNA Server PROD/VER:WINDOWS:3.0SP3,4.0,4.0SP1,4.0SP2 OPER/SYS: KEYWORDS:kbsna300sp4fix kbsna400sp3fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft SNA Server, versions 3.0SP3, 4.0, 4.0SP1, 4.0SP2 ------------------------------------------------------------------------------- SYMPTOMS ======== When using persistent verification on LU6.2 sessions, SNA Server may fail unexpectedly with the following event: Event ID: 686 Source: SNA Server Description: SNA Server Internal buffer pool error When this occurs, all SNA Server processes must be restarted, including SnaBase and the SNA Server service. CAUSE ===== To support persistent verification, the SNA Server service may be required to remove the password vector from the FMH-5 Attach request received from the SNA Server APPC DLL (Wappc32.dll). In one case, SNA Server failed to properly reformat the message, which resulted in internal SNA buffer pool corruption. RESOLUTION ========== SNA Server 4.0 (post SP2) ------------------------- To resolve this problem, obtain the latest service pack for SNA Server version 4.0. For additional information, please see the following article in the Microsoft Knowledge Base: Q215838 How to Obtain the Latest SNA Server Version 4.0 Service Pack SNA Server 3.0 -------------- To resolve this problem, obtain the latest service pack for SNA Server version 3.0. For additional information, please see the following article in the Microsoft Knowledge Base: Q184307 How to Obtain the Latest SNA Server Version 3.0 Service Pack STATUS ====== Microsoft has confirmed this to be a problem in SNA Server 3.0 SP3, SNA Server 4.0, 4.0 SP1 and 4.0 SP2. This problem was first corrected in SNA Server version 3.0 Service Pack 4 and SNA Server version 4.0 Service Pack 3. Additional query words: ====================================================================== Keywords : kbsna300sp4fix kbsna400sp3fix Technology : kbAudDeveloper kbSNAServSearch kbSNAServ400 Version : WINDOWS:3.0SP3,4.0,4.0SP1,4.0SP2 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.